CHICAGO -- The Cubs have traded two starting pitchers in each of the last two seasons, and Jason Hammel may be next to go by the Trade Deadline. The right-hander's name has been linked to several teams interested in adding a starting pitcher for the final two months of the season.

"It's the usual chatter this time of year," Cubs president of baseball operations Theo Epstein said Friday about calls he's had from teams. "There are talks, but probably not as much as you'd think sometimes by clicking on all the websites."

Hammel and Jeff Samardzija both have reportedly drawn interest from teams. The Cubs are still trying to stock the farm system with young talent, and in the last two years, they have acquired players such as Kyle Hendricks, Mike Olt, Neil Ramirez, Justin Grimm, Corey Black and C.J. Edwards in deals.

Hammel improved to 7-0 in his career against the Nationals in Friday's 7-2 win, allowing two runs on five hits, while striking out six, over 6 1/3 innings.

Cubs manager Rick Renteria said he's not thinking now about any roster changes after the July 31 Deadline.

"I'm not going to assume [there will be changes] and will continue to do what I do," Renteria said. "If change occurs, I'll deal with it."